CN207542535U

CN207542535U - Anti-carbon deposition commutator

Info

Publication number: CN207542535U
Application number: CN201721568851.1U
Authority: CN
Inventors: 杨建旺; 杨紫妍; 黄小红
Original assignee: Ruian Boyu Electric Appliances Co ltd
Current assignee: Ruian Boyu Technology Co ltd
Priority date: 2017-11-22
Filing date: 2017-11-22
Publication date: 2018-06-26
Anticipated expiration: 2027-11-22

Abstract

The utility model discloses anti-carbon deposition commutators, insulate including matrix and between the evenly arranged commutator segment of matrix excircle, adjacent commutator segment equipped with insulation tank, and the top of commutator segment is equipped with bonding wire crotch, it is characterised in that：The inner end of insulation tank is equipped with axial pass trough, axial pass trough and the equidirectional upper and lower end face set and penetrate through matrix of insulation tank；The inside of bonding wire crotch position at the top of hook mold both ends R angles, middle straight line forming surface.The utility model can solve commutator carbon distribution and problem of faulty soldering, so as to eliminate the two of motor damage big main factors, greatly improve and motor service life is effectively ensured.

Description

Anti-carbon deposition commutator

Technical field

The utility model is related to a kind of commutators.

Background technology

The damage of motor under normal circumstances has two big main factors, first, the insulation tank carbon distribution of commutator, causes to commutate Motor damage caused by device short circuit；Second is that it is deposited between the bonding wire crotch of commutator and the enameled wire of motor-spin-coil in a postwelding In rosin joint, lead to motor damage caused by open circuit.Its basic reason is all that there are certain deficiencies in structure because of commutator It is formed.

The commutator of the prior art, including matrix and in the evenly arranged commutator segment of matrix excircle, adjacent commutator segment it Between insulated by being equipped with insulation tank, the top of commutator segment is equipped with bonding wire crotch.Since the groove width of insulation tank is generally stringent Control is within 0.5mm, and depth is limited, i.e. the narrow space ventilation condition of insulation tank is very poor, and there are dead angle, institutes for insulation tank Carbon dust caused by carbon brush abrasion inevitably accumulates in insulation tank and is not easy to discharge when being worked with motor, even if using Blowing mode is also to have little effect；When carbon dust is when insulation tank inner product is stored to a certain degree, just it is likely to that commutator occurs Short circuit phenomenon.In addition, bonding wire crotch is after shaping, position is inside and outside circular arc at the top of the hook of bonding wire crotch, the hook top of bonding wire crotch Intensity is weaker, and bonding wire crotch stress, which will appear, in such pinpoint welding procedure arranges, and enameled wire easily is crushed damage, and position at the top of hook Inner arc very little, arc radius is much smaller than the radius of enameled wire, the inside of position and enameled wire at the top of such bonding wire crotch hook Between can there are larger gap, the two cannot contact very well, also be susceptible to rosin joint phenomenon.

Invention content

In view of the deficiency of background technology, the purpose of this utility model, which is intended to provide one kind, can solve carbon distribution and problem of faulty soldering, So as to eliminate the two of motor damage big main factors, the anti-carbon deposition commutation of motor service life is greatly improved and is effectively ensured Device.

The utility model adopts the following technical scheme that complete

Anti-carbon deposition commutator is set including matrix and between the evenly arranged commutator segment of matrix excircle, adjacent commutator segment There is insulation tank to insulate, the top of commutator segment is equipped with bonding wire crotch, it is characterised in that：The inner end of insulation tank is equipped with axial logical Slot, axial pass trough and the equidirectional upper and lower end face set and penetrate through matrix of insulation tank；The inside of bonding wire crotch at the top of hook position into Type go out both ends R angles, middle straight line forming surface.

The axial pass trough is designed for circular hole, and the aperture of axial pass trough is not less than 4mm.

After adopting the above technical scheme, the utility model has the following advantages：1. the inner end of insulation tank is equipped with axial logical Slot, can greatly improve the ventilation condition of insulation tank, and dead angle is not present, and when motor runs at high speed inside motor in insulation tank Disturbance air can from the both ends of axial pass trough force pass in and out, so carbon dust caused by carbon brush abrasion is difficult in insulation tank inner product It deposits, so as to thoroughly solve the problems, such as commutator carbon distribution.It is straight that 2. the inside of bonding wire crotch position at the top of hook molds both ends R angles, centre The shape of line, this not only enables more preferably to be contacted, but also the most between enameled wire and the inside of position at the top of bonding wire crotch hook The bending strength on crotch hook top is crucially increased, in this way in pinpoint welding procedure, although bonding wire crotch stress is insufficient to allow It is fallen after entire crotch and the row of falling occurs, so as to avoid enameled wire crushing damage, therefore can more preferably ensure rosin joint phenomenon do not occur.

Description of the drawings

Fig. 1 is the top-direction view of the utility model,

Fig. 2 is the A-A sectional views of Fig. 1,

Fig. 3 is the partial enlarged view of Fig. 2.

Specific embodiment

As shown in the figure, the Hooked reverser of the utility model, including matrix 1 and in 1 excircle of matrix evenly arranged ten Six commutator segments 2, the top of commutator segment 2 are equipped with bonding wire crotch 3, insulate between adjacent commutator segment 2 equipped with insulation tank 4, absolutely The groove width of edge slot 4 is within 0.5mm, and the inner end of insulation tank 4 is equipped with axial pass trough 5, and axial pass trough 5 and insulation tank 4 are equidirectional The upper and lower end face of matrix 1 is set and penetrates through, the axial pass trough 5 is designed for circular hole, and the aperture of axial pass trough 5 is not less than 4mm.Institute State the inside of bonding wire crotch 3 position at the top of hook mold both ends R angles, middle straight line 6 forming surface, both ends R angles and middle straight line 6 Size is slightly larger than the enameled wire line footpath of spot welding therewith after addition.

Claims

1. anti-carbon deposition commutator is equipped with including matrix and between the evenly arranged commutator segment of matrix excircle, adjacent commutator segment Insulation tank insulate, and the top of commutator segment is equipped with bonding wire crotch, it is characterised in that：The inner end of insulation tank is equipped with axial logical Slot, axial pass trough and the equidirectional upper and lower end face set and penetrate through matrix of insulation tank；The inside of bonding wire crotch at the top of hook position into Type go out both ends R angles, middle straight line forming surface.

2. anti-carbon deposition commutator as described in claim 1, it is characterised in that：The axial pass trough is designed for circular hole, axial logical The aperture of slot is not less than 4mm.